package com.sky.controller.admin;

import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.Set;

@RestController
@RequestMapping("/admin/dish")
@Api(tags = "菜品相关接口")
@Slf4j
public class DishController {

    @Autowired
    DishService dishService;

    @Autowired
    RedisTemplate redisTemplate;

    /**
     * 新增菜品
     *
     * @return
     */
    @PostMapping
    @ApiOperation("新增菜品")
    public Result save(@RequestBody DishDTO dishDTO) {
        log.info("新增菜品");
        dishService.saveWithFlavor(dishDTO);

        //清除redis缓存数据
        String key = "dish_" + dishDTO.getCategoryId();
        clearCache(key);

        return Result.success();
    }

    /**
     * 菜品分页查询
     *
     * @param dishPageQueryDTO
     * @return
     */
    @ApiOperation("菜品分页查询")
    @GetMapping("/page")
    public Result<PageResult> dishPageQuery(DishPageQueryDTO dishPageQueryDTO) {
        log.info("开启菜品分页查询...");
        PageResult pageResult = dishService.pageQuery(dishPageQueryDTO);
        return Result.success(pageResult);
    }

    /**
     * 批量删除菜品
     *
     * @return
     */
    @DeleteMapping
    @ApiOperation("批量删除菜品")
    public Result deleteBatch(@RequestParam List<Long> ids) {
        log.info("批量删除菜品...");
        dishService.deleteBatch(ids);

        //如果批量删除了菜品，就清除redis中所有以dish_开头的key
        clearCache("dish_*");
        return Result.success();
    }

    /**
     * 根据id查询菜品信息
     *
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    @ApiOperation("根据id查询菜品")
    public Result<DishVO> getById(@PathVariable Long id) {
        log.info("查询菜品信息{}", id);
        DishVO dishVO = dishService.getByIdWithFlavor(id);
        return Result.success(dishVO);
    }

    /**
     * 修改菜品及菜品口味信息
     *
     * @param dishDTO
     * @return
     */
    @PutMapping
    @ApiOperation("修改菜品及菜品口味信息")
    public Result update(@RequestBody DishDTO dishDTO) {
        log.info("修改菜品及菜品口味信息");
        dishService.updateWithFlavor(dishDTO);

        //如果修改了菜品，就清除redis中所有以dish_开头的key
        //因为如果修改了菜品的分类，就还要另外判断，为了简便所有缓存都清理掉
        clearCache("dish_*");
        return Result.success();
    }

    /**
     * 根据分类id查询相关菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询相关菜品")
    public Result<List<Dish>> list(@RequestParam Long categoryId) {
        log.info("根据分类id:{}查询相关菜品", categoryId);
        List<Dish> dishList = dishService.list(categoryId);
        return Result.success(dishList);
    }

    @PostMapping("/status/{status}")
    @ApiOperation("菜品的起售/禁售")
    public Result startOrStop(@PathVariable("status") Integer status,Long id) {
        log.info("启用、禁用菜品id:{}{}", id, status);
        dishService.startOrStop(status,id);

        //清除redis中所有以dish_开头的key
       clearCache("dish_*");
        return Result.success();
    }

    /**
     * 统一清理缓存数据
     * @param pattern
     */
    private void clearCache(String pattern){
        Set keys = redisTemplate.keys(pattern);
        redisTemplate.delete(keys);
    }
}
